Tire tool



W. J. COX

June 16, 1953 TIRE TOOL 2 Sheets-Sheet 1 R O m a, m M M m L wM N Q -t AQwwwm? \N KIT S M @n NN U mm u U ww w .u

ATTORNEYS June 16, 1953 I W, J, CQX '2,642,265 TIRE TooL l Filed Ju1y24, 195o 2 sheets-sheet 2 BY Y ' ATTORNEYS c This invention-relatesPatented June 16;` 1953 UNITED' STATES ENTW `OF FICE 8 Claims. 1

to tire tools and more particularly to improvements in the tool of myPatentNo. 2,474,515 granted June 28, 1949. In the tire spreading tool ofthat patent detachable casing-bead engaging hookswere used and serve thesame purposes and uses as the former device, is so constructed thatthere are no de tachable parts, and an operating screw is providedbetween the jaw-carried leversgto permit of their easy operation and tolock or hold them in the position to which they are adjusted. Furlthernovel features and advantages will be pointed out in the followingdescription of the' present preferred construction shown in the accompanying drawings, in which:

`Figure 1 is 7a transverse section through a tire casing andshowing myimproved tool in side elevation applied across theexterior of the casingto spread its beads;

Fig. 2 is a bottom view of the tool With its parts in the position shownin Fig. 1, the spring connecting the two levers being omitted;

Figs. 3, 4 and 5 are detail sectional views taken respectively on thelines 3--3, 4--4 and 5-5 of Fig. 1;

Fig. 6 is a, view similar to Fig. 1 but showing the manner of using thetool across the inner circumstance of a tire casing;

Fig. 7 is a detail section on line I-'I of Fig. 1; and I Fig. 8 is adetail showing another way of mounting the screw for rotation anduniversal l angular movement;

` Fig. 9 is a detail sectional view similar to Fig. 3 but showing amodication; and

r Fig.` 10 is a detail View showing a further modification.

Referring more in detail to the drawings T denotes `a tire casing havingthe usual beads B, and IU denotes as a Whole my improved spreading toolwhich may be applied either' across the outer side lor tread of thecasing, as shown in Fig. 1, or across the inner portion orfbeads, asseen in Fig. 6. The tool comprises two crossed levers II and I2pivotally connected betweenV their endsat I3. The lever II issubstantially J-shaped having a straight outer or rear end i I4 and alongitudinally curved inner or front end I5. The lever I2issubstantially U-shaped or C-shaped having a longitudinally curvedinner end I6 and a similarly curved outer end I'I which is moved towardand from the end I5 of the other lever by a screw I8 as later described.The inner ends I5 and I6 of the two levers are in opposed relation toform tire actuating jaw portions. Each of the latter carries similarbead engaging elements so that the tool may be used either across theexterior or the interior circumference of the casing. i

The jaw portions I5 and I6, and the bead engaging devices upon them areof the same con-V struction.. The levers are preferably formed of flatmetal bars, and the inner extremities of the jaw portions I5 and Itarebent at right angles to form transverse portions or plates i9 and thenagain bent to form portions or lugs 29 parallel with the iiat opposedportions 2l at the inner endsof the two jaw members as seen in Fig. 3.Slidable freely through a notch or opening 22 in each of the plates I9is the straight shank portion 23 of a bead engaging hook 2d. These hooks24 are employed when the tool is used as seen in Fig. 1. The two shanks23 pass through guides 25, which may be in the form of eyebolts carriedby the portions 2l, and also through coil springs 25, the latterthrusting at one end against the guide eyes and at the other againststops 2'I on the hook shanks 23. The stops 2'I are preferably in theform of right angularly bent arms at the extremities of the shanks, thearms serving as handles for manipulating the hooks 24. The hooks aremovable toward and from the ends of the jaw portions I5 and I6 to permitthe tool to be used on tire casings of different sizes. By the use ofthe stops 21 the hooks may be moved against the tension of the springs26 to facilitate the engagement of the hooks with the beads of thecasing and the hooks maybe rotated axially of their Shanks to turn themto an out-of-the- Way `or inoperative position, as shown in Fig. 6, whenthe tool is to be used as shown inthat View.

1f desired, I may lockthe hooks in diiierent positions of longitudinaladjustment by provid-` ing their Shanks 23 with a plurality oflongitudinally spa-ced notches 28, any one of which may be engaged withthe eye-bolt `25 as Will be understood upon reference to Fig. 3. Theopening in the eye-bolt or guide has a larger di-` ameter than that ofthe hook shank so that by pressing the latter laterally and moving itendwise, any of the notches may be engaged with the eye-bolt. With thatconstruction the spring 26 need not be so stiff, and at no time will itbe fully compressed. If desired, a cotter pin or other stop pin 29 maybe provided in each shank 23 to engage the guide or stop 25 to limit theupward or outward movement of the hook under the action of the spring.

When the tool is to be used as shown in Fig. 6 across the beads B, thelatter are engaged with pairs of substantially frusto-conical shapedrollers 30 carried by the jaw members I5 and I6. The rollers of eachpair are spaced from each other in a direction circumferentially withrespect to the beads B and laterally with r6- spect to the plane inwhich the levers move. The peripheries of the rollers are slightlyconcaved or shaped to engage the inner opposite walls of the casing atthe beads, and, hence, facilitate the Vshifting of the tool around theinner circumference of the casing when it iS spread open by the tool.The rollers of each pair are mounted for rotation on ,the straight andparallel arms 3| of a U-shaped hanger 32 which is pivoted for limitedswinging movement in the U-shaped end portion 20, I9, 2| of one of thejaw members I5, I6, as seen in Fig. 4. The rollers are preferablyretained on the arms 3| between spaced cotter pins 33 and 34 or thelike, sleeves 35 being interposed between the rollers and the outercotter pins 34. The cross portion of the U-shaped hanger turns inbearing openings in the parts I9, 2| and its rotating movement in onedirection is limited by a stop arm or pin 36 when the latter engages theplate or cross portion I9. The parts are in that position` when therollers are' engaged with the inner sides of the beads to spread them asin Fig. 6. When the rollers are not so engaged, they are swung upwardlyand laterally in an outward direction by a coil spring 3l connected atone end to the stop pin or arm `36 and anchored at its other end to apin 38 on Vthe portion 2| of the lever. It will be seen that the springwill normally swing the hangerV arms to hold the rollers out of the waywhen the hooks 24 are to be used.

The lever actuating screw I8, which moves the jaws I5, I 6 toward andfromA each other, is preferably of the square thread type and has asuitable crank handle 40 on its outer end. The screw threaded bar I8 isdisposed cross-wise of the spaced curved jaw portions I and II of thetwo levers and passes through a` swiveled nut 4i carried bythe outer endportion |I of the lever I2. The screw bar |8 has it inner end connectedfor rotation and univeral angular movement to the jaw portion I5 of thelever II. As shown in Fig. 5 a ball 42 is formed on the inner end of thescrew and has rotatable and angular movement in a socket 43 carried by abracket 44 suitably secured to one side of the jaw portion I5. Ifdesired, the ball may be mounted, as shown in Fig. 8, between semi-Vspherical seats formed in the spaced portions 45 of two angularbrackets secured as at (i6-to the portion I5. The nut 4| is preferablyswiveled by positioningl it between one side of the lever end |'1 and anarm of an angle Vbracket 41 secured at 48 to said end, and by providingit at opposite sides with conical pivot seats 49 to receive the pointedends of two screws 50 as shown in Fig. 7.

When the tool is to be used astride the exterior of the casing and thehooks 24 are used to spread the same, as in Fig. 1, I iind it desirableto provide a coil spring 5I between the jaw portions I5 and I6. Thisspring has its intermediate portion engaged with the tread of the casingand prevents the jaws from dropping too far down on small size tires.Its use makes it easier to engage the hooks 24 over the tire beads. Theends of the spring 5 I are engaged with openings 52 in the jaw portions,and these openings may be positioned closer to the eX- tremities of thejaws than shown in Fig. 1, or a series of the openings 52 may beprovided in each of the portions I5, I6 for the reception of Vthe hookson the ends of the spring.

end I4 of the lever II suiiiciently long and at- Y taching to itsopposite sides. laterally and an-` gularly extending straps or props 53,Vas shown in Figs. 1 and 2, I form a stand or support for the spreadportion of the casing. The V'straps are angular and have their innerends fastened by rivets 53a so that their diverging outer ends inyconnection with the end I'I form a sort of tripod which holds the casingsteady and slightly elevated.

In the modification shown in Fig. 9, I omit the notches 28 of Fig. 3,and employ a stop sleeve ISE! to limit the compression of the spring 26.The sleeve surrounds the hook shank [23 within the spring 25 and has atone end an `annular flange |0| interposed betweenV the eye 25 and theadjacent end of the spring. The other end of the sleeve forms a stop tobe engaged by hand piece 21 when the spring is fully compressed.

In Fig. l0 I have shownv diagrammatically an alternative form ofadjustment for the hook 24 to take the place of the notches V28 and toadapt the tool for use on tire casings of different sizes. In this formthe screw eye25 is mountedin the free end of a flat link |02 which hasits other end pivoted at |53 on the jaw portion IBad/or I5. The link |62swings on thepivot I|J3 and is secured in an adjusted position by a pin,bolt or the like |04 passed through an opening in an intermediateportion of the link Yand through any one of an arcuate series ofopenings |05 formed in the jaw portion concentric with the pivot |03.The shank member 23V having' the hook 24 may thus be adjusted towardandfrom the end of the jaw portion of the lever according to the size ofthe tire casing to be spread. The stop sleeve |00 of Fig. 9 ispreferably used in the structure of Fig. 10 although not shown in thatview.

It is to be understood that the above and other variations may beemployed in making the tool, according-to its intended useor uses; andthat while I have shown and described the rollers 3|] on both Yjawportions as being movable to out-of-the-way positions, the roller orrollers 30 on the jaw portion I5 adjacent the operating screw I8 may benon-swingably mounted. In other words the rollers onfonly one side ofthe tool need beswingable to an out-of-the-way position.

It is believed the operation and usesof the tool will be apparent fromthe foregoing detailed description. The tool may be used on tire casingsof various sizes and because of the use of the screw for operating thejaws, very Y the tread or the beads.

littlephy'sical exertion is necessary, :even when large size casings areto `be spread. The jaws are easily moved toward or from each other whenthel crank` handleis rotated and the bead engaging parts on the jaws maybe readily manipulatedisothateither vset may be used according towhether it desired to use the tool across When both `the hooks 24a`n`dfthe rollers 30 are swung outwardly to inoperative positions thestraight or cross portions !9 of the U-shaped vends ofthe jaw memberslmayA be engaged "with the outer surfaces .of thebeadsB so that byturning the crank 45) rmight be lost or misplaced and is much easier toapply and operate than the one of my previous patent.

Y From the foregoing, taken in connection with the accompanying drawing,it will be seen that novel `and advantageous provision has been made forcarrying out the objects of the invention, and while preferences havebeen disclosed, variations may, of course, be made within the scope ofthe invention as claimed.

I claim:

1. A tire casing spreader comprising a pair of crossed levers pivotallyconnected intermediate their ends,` the inner ends of said levers beinerlongitudinally curved and arranged in opposed relation 4to provide jawforming portions, one of said levers having its outer end curvedlongitudinally to dispose it in outwardly spaced relation to the curvedinner end of the other of said levers, a swiveled nut carried by the endof said one lever, amanually actuated screw in said nut, a ball andsocket connection between the inner end of said screw and the adjacentjaw portion of the other of said levers, and means carried byrsaid jawportions to engage the beads of a tire casing, said means comprisingbead engaging hooks slidably mounted on said jaw portions, and springmeans for retracting said hooks.

2. The structure of claim l together with a coil-spring connectedbetween said jaw portions and engageable with the tread of a tire casingwhen the toolis used astride the latter.

3. The structure `of claim y1 together with means for holding said hooksindifferent positions of adjustment longitudinally of said jaw portions.o t

J4. A tire casing spreader Ycomprising a vpair of crossed leverspivotally connected intermediate their ends, the inner ends of saidlevers being longitudinally curved and arranged in opposed relation toprovide jaw forming portions,

` one of said levers having its outer end curved lthe inner end of saidscrew and the adjacent jaw portion of the `other of said levers, theextremities of said jaw portions having flat opposed portions connectedby transverse plates, and U-shaped hangers having parallel armsconnected by cross portions, .the latter extending through and beingrotatable in said dat opposed portions, and the arms having portions` toengage the inner sides of the tirebeads.

5. The structure of claim 4 together with stop arms carried by the`cross portions of said hangers and engageable with said transverseplatesto limit the swinging movement of` said armsin one direction, and springmeansacting on said lstop arms to swingsaid parallel arms in theopposite direction. I 1

6. A tire` casing spreader comprising a pair of crossed levers pivotallyconnected intermediate their ends, one of said levers being C- shapedwith opposed curved ends, the other of said levers being J-shaped with astraight outer end and a longitudinally curved inner end disposed ininwardly spaced relation to one of the curved ends of said C-shapedlever, the other curved end of the latter and the curved end of saidJ-shaped lever forming opposed jaw portions carrying means to engage thebeads of a tire casing, a swiveled nut carried by the curved outer endof said C-shaped lever, a manually actuated screw in said nut, a balland socket connection between the inner end of said screw and the curvedjaw portion ofsaid J-shaped lever, means carried by the jaw portions ofthe two levers to engage the beads of a tire casing, and a pair ofangular arms disposed on opposite sides of the straight outer portion ofsaid J-shaped lever, said angular arms having their inner ends securedto said straight portion at a point spaced inwardly from its outer end,the outer portions of said angular arms diverging outwardly andlaterally from each other and from the end por-` relation to the curvedinner end of the other of said levers, a swiveled nut, carried by theend `of said one lever, a manually actuated screw in said nut, a ballandsocket connection between the inner end of said screw and theadjacent jaw portion of the other of said levers, tire bead engaginghooks having shanks with stops at their outer ends and a row oflongitudinally spaced notches on their intermediate portions, guides onsaid jaw portions through which said Shanks slide and in which' theyhave lateral movement to permit the notches to be engaged with anddisengaged from said guides, and coil springs on said shanks betweensaid guides and said stops.

8. A tire casing spreader comprising a pair of crossed levers pivotallyconnected intermediate their ends, one of said levers being C-shapedwith opposed curved ends, the other of said levers being J-shaped with astraight outer end and a longitudinally curved inner end disposed ininwardly spaced relation to one of the curved ends of said C-shapedlever, the other curved end of the latter and the curved end of saidJ-shaped lever forming opposed jaw portions carrying means to engage thebeads of a tire casing, a screw threaded bar disposed cross-wise of f?,the said spaced curved portions of the two levers, a.' ball on the innerend of said screw bar, a socket bearing on the curved jaw portion ofsaid J-shaped lever and in Which said ball is revolvably receivedthereby mounting said screw d bar for rotation on its longitudinal axisand for universal angular movement, a traveling nut on said screw barand formed on its opposite sides with diametrically opposed pivot seats,axially alined pivots engaged with said seats `and carried by the curvedend of the C-shaped lever which is spaced from the jaw portion of the J-8 shaped lever, and a handle at the outer end of said screw bar forrotating the latter. v

WILLIAM J ARED COX.

References cited in the me of this patent f UNITED sTATEs PATENTS NumberName Date lo 1,847,772 Larsony a Mar. 1, 1932 v 2,474,515 Cox June 28,1949 2,528,362V Hauta Oct. 31, 1950

